Soil Texture

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USDA Particle-Size Distribution ‣ Fine-earth earth fraction: : Finer than 2 mm: Used for <strong>Soil</strong> Textural Class ‣ Rock fragments: 2 mm in diameter or larger. Particles less than 10” are many times called “coarse fragments”. Used to modify textural class.
Page 1 and 2: Soil Texture 3/19/2005 Soil and Sit
Page 3 and 4: CIDWT/University Disclaimer These m
Page 5 and 6: Soil Texture ‣ Use texture to mak
Page 7 and 8: Soil Texture ‣ Mineral material o
Page 9: Systems for Classifying Particle Si
Page 16 and 17: Examples 3/19/2005 Soil and Site. L
Page 18 and 19: 25 % Sand ?? % Silt 45 % Clay
Page 20 and 21: 25 % Sand 30 % Silt 45 % Clay CLAY
Page 22 and 23: 65 % Sand 20 % Silt 15 % Clay
Page 24 and 25: ?? % Sand 30 % Silt 30 % Clay
Page 26 and 27: 40 % Sand 30 % Silt 30 % Clay CLAY
Page 28 and 29: Fine-earth earth fraction ‣ Sand
Page 31 and 32: Textural Groups for OSWW ‣ Group
Page 33 and 34: LOAM 40 % Sand 40 % Silt 20 % Clay
Page 35 and 36: 65 % Sand 20 % Silt 15 % Clay SANDY
Page 37 and 38: Determining Texture 3/19/2005 Soil
Page 39 and 40: Field Determination of Texture 3/19
Page 41 and 42: Soil does not form a cast: Textural
Page 43 and 44: Forms a cast of moist soil material
Page 45 and 46: Field determination of texture ‣
Page 47 and 48: Field determination of texture ‣
Page 50 and 51: Laboratory Determination of Texture
Page 52 and 53: Determining Percent Silt and Clay (
Page 54 and 55: Stoke’s Law ‣ The settling time
Page 56 and 57: At 20 o C how long does it take a 2
Page 59: 1000 ml Sedimentation Column
Page 70 and 71:
Pipette Setup: Lowy Pipette Pump St
Page 72 and 73:
Is there texture beyond just Sand,
Page 74 and 75:
Textures Classes with Sand-Size Siz
Page 76 and 77:
Terms for describing flat rock frag
Page 78 and 79:
Textural Groups for OSWW ‣ Group
Page 80 and 81:
Pore Space
Page 83:
Interpreting Textural Modifiers Rul
Page 90 and 91:
Organic Matter in Soils ‣ Colorin
Page 92 and 93:
Organic Matter Subdivisions ‣ Muc
Page 94 and 95:
Identifying Organic Material by “
Page 96 and 97:
Types of Soil Organic Materials ‣
Page 98 and 99:
Identifying Organic Soil Type ‣ R
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Soil Texture

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